Evaluation of nitrogen fertilization for planting corn in a yellow latosol under no-tillage system.

The objective of this work was to evaluate the efficiency of nitrogen fertilization in relation to the population of corn plants in a yellow latosol under no-tillage system. The experimental design was a randomized block with three replications, in a 4 x 4 factorial scheme, corresponding to four levels of N (0, 60, kg haˉ1 120 and 180) and four planting densities (45,000; 55,000; 65,000 and 75,000 plants haˉ1). 48 soil samples were collected to determine chemical soil attributes (pH, OM, K, Ca, Na, Mg and Al) and 48 leaf samples to determine macronutrients in the leaf (N, P, K, Na, Ca and Mg). The data were submitted to comparison of means by the Scott-Knott test. The corn yield increased linearly up to the dose of 180 kg haˉ1 N. Higher productivity was observed with the combination of 120 and 180 N (kg haˉ1) with the density of 75,000 plants ha-1. There was an increase in the N content in the leaves with increasing doses of N in the soil.

Bibliographic Details

Main Authors:	SOUZA, L. P. F., PAULA, M. T., VELOSO, C. A. C., CARVALHO, E. J. M., SILVA, A. R., PONTES, A. N., SOUZA, M. J. R., URBINATI, C. V., NUNES, H. da C. B., SIMÕES, P. H. O.
Other Authors:	Luana Paula Freire Souza, UFPA; Manoel Tavares Paula, UFPA; CARLOS ALBERTO COSTA VELOSO, CPATU; EDUARDO JORGE MAKLOUF CARVALHO, CPATU; ARYSTIDES RESENDE SILVA, CPATU; Altem Nascimento Pontes, UFPA; Marcelo José Raiol Souza, UFPA; Claudia Viana Urbinati, UFPA; Henriqueta da Conceição Brito Nunes, UFPA; Pedro Henrique Oliveira Simões, UFRA.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2020-12-28
Subjects:	Zea Mays, Milho, Latossolo Amarelo, Fertilidade do Solo, Nitrogênio,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1128770
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